Allopatric Speciation Requires ____

Question

Allopatric speciation requires ____.  
A) accelerated gene flow
B) physical separation
C) physical diversity
D) behavioral diversity
E) sexual selection

Accepted Answer

Allopatric speciation, by definition, requires physical separation. The separation prevents or greatly reduces gene flow between populations, leading to genetic divergence and ultimately, speciation. Accelerated gene flow, physical diversity, behavioral diversity, and sexual selection may play roles in speciation, but they are not requirements for allopatric speciation.